| 摘要 |
PROBLEM TO BE SOLVED: To provide a crystal vibration device capable of suppressing variation of a vibration frequency due to drop impact and rupture of an electrical and mechanical connection part without causing increase of a crystal impedance.SOLUTION: In a crystal vibration device 1, a crystal oscillator 7 is mounted onto a substrate 2 used as a package by first and second conductive adhesive layers 5, 6, and a) the first and second conductive adhesive layers 5, 6 have a planar shape in which two circles or ellipses are partially overlapped in a plan view, b) the first and second conductive adhesive layers 5, 6 have two mutually separated conductive adhesive portions, or c) the first and second conductive adhesive layers 5, 6 have a lengthwise direction, and an aspect ratio forming a ratio of the maximum dimension in the lengthwise direction to the maximum dimension in the width direction that is perpendicular to the maximum dimension in the lengthwise direction is not less than 1.5 and not more than 3.0.SELECTED DRAWING: Figure 1 |
